<!--
 * @Author: WangGuojian 1085844536@qq.com
 * @Date: 2024-07-02 21:43:13
 * @LastEditTime: 2024-07-02 21:49:22
 * @LastEditors: WangGuojian 1085844536@qq.com
 * @FilePath: \html\code\2_CSS\16_CSS中常用的长度单位\05_CSS_盒子模型的组成部分.html
 * @Description:
-->
<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>盒子模型的组成部分</title>
    <style>
        div {
            width: 400px;
            height: 400px;
            font-size: 20px;
            background-color: gray;
            padding: 20px;
            border: 10px dashed transparent;
            margin: 50px;
        }
    </style>
</head>

<body>
    <div></div>
</body>

</html>